Re: [PATCH] tpm: fix crash in tpm_tis deinitialization

[Jason Gunthorpe]

On Tue, Apr 12, 2016 at 07:26:27AM +0300, Jarkko Sakkinen wrote:
> > This needs to be after ops is fenced, something like this.
> 
> I would appreciate a supporting argument.
> 
> I guess the argument here is that this will prevent user space from
> issuing TPM commands after the shutdown command has been sent?

It prevents everything including the kernel from issuing a command
after shutdown. The shutdown is sent as the last command and no other
commands can follow it.

It doesn't make any sense to allow commands to follow shutdown.

Jason